Bottle-stopper



(No Model.)

-W. L. ROORBAOH.

BOTTLE STOPPBR.

It? Patented June 23, 1885..

J I :1: E J: x .H: :1: za fl: 2111:: a m v 7 & 0' S w M UNITED STATES PATENT OFFICE.

WVILLIAM L. ROORBAGH, OF PHILADELPHIA, PENNSYLVANIA.

BOTTLE-STO PPER.

SPECIFICATION forming part of Letters Patent No. 320,701, dated June 23, 1885.

Application filed March 27, 1885. (No model.) Patented in England December 30, 1884, No. 17,044.

To all whom it may concern:

Be it known that I, WILLIAM L. ROORBAOH, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Bottle-Stoppers, which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure 1 represents a vertical section of a bottle and stopper embodying my invention. Fig. 2 represents a vertical section of a modification thereof.

Similar letters of reference indicate corresponding parts in the two figures.

My invention consists in an improvement in the class of internal bottle-stoppers in which a bottle is provided with a grooved neck to receive rubber packing, of the form of an annulus, whose outer circumference conforms to the shape of the groove, and whose inner circumference has an inclined face forming a rise, 011 which the stopper has a seat, the top and bottom of said inner circumference being flush with the neck of the bottle, the advantages being hereinafter fully set forth.

Referring to the drawings, A represents a bottle, and B a groove in the neck thereof,

said groove having a side wall, a, and top and bottom walls, I), and within said groove is seated a rubber packing, 0, whose outer circumference conforms to said groove B, and whose inner circumference has an inclosed face forming a rise or inwardly-projecting ridge, D, against which the .stopper E is seated when the bottle is closed, it being noticed that the top and bottom walls of the groove B inclose the top and bottom walls of the packing 0, so that the inner circumference of the packing is flush with the neck of the bottle. Primarily, the stopper is inserted in the neck of the bottle, and the packing is then compressed in the groove B, so that it closes part of the space of the neck, preventing the escape of the stopper. The bottle is filled and charged in any suitable manner, and the pressure within the same holds the stopper on its seat. In my former patent the packing is of cylindrical form, and when compressed in the groove it assumes the double conical or inclined form of the groove; but the upper and lower portions of the packing are liable to loosen as they are compressed to less extent than the middle portion, and thus the packing imperfectly holds the stop per. In the present case the packing bears uniformly against theside wall of the groove, and its upper and lower-edges, being covered by the top and bottom Walls of the groove, are not liable to slip out of the groove and the packing remains reliable in position. It will also be seen that the stopper makes a joint on the rise of the inner circumference of the packing, thus keeping the contents of the bottle from coming in contact with the rubber, and exerts a pressure diagonally upwardly and laterally outwardly on the packing, so that the latter is more tightly pressed against the upper inner corner of the groove, and its retention in the groove is assured.

In Fig. 1 the packing shows a greater diameter at the middle than at the ends. This is serviceable in cases where the packing requires to be of great strength and possess much elasticity. In Fig. 2 the groove is inclined in opposite directions, andthe outer circumference of the packing is prima' rily of the same contour as said groove.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

As an improvement in the class of internal bottle-stoppers, a stopper, in combination with a bottle having in its neck a groove formed with side, top, and bottom walls, the said top and bottom wallsbeing at or nearly at right angles with the axis 'of the bottle, and a rubber packing, the outside circumference of which conforms to the shape'of the groove, and its inner circumference having a rise from the lower edge to near the center thereof, forming a ridge, both upper and lower edges of said inner circumference being flush with the inner wall of the neck of the bottle, substantially as described.

\VILLIAM L. ROORBACH.

WVitnesses:

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